Tool-holder.



Patented Apr. 10,1917.

n. NELSON.

TOOL HOLDER.

APPLICATION FILED FEB. 25, I916.

ROBERT NELSON, OF MINNEAPOLIS, MINNESGTA.

TOOL-HOLDER.

Application filed February 25, 1916.

To all whom it may concern:

Be it known that I, Bonner NnLsoN, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented new and useful Improvements in Tool-Holders, ofwhich the following is a specification.

This invention relates to improvements in tool holders and moreparticularly to ratchet tool holders, and primarily adapted for use as asubstitute for the usual brace and bit and screw driver, when there isinsuiiicient space t warrant the use of the latter mentioned tool; andfurther this ratchet tool holder is adapted to hold and be used with avariety of small tools such as auger bits and the like.

A further object of the invention is the provision of a spring forretaining the dogs in engagement with the teeth of the tool socket andmeans for alternately causing the dogs to disengage from the ratchetwhereby the head of the tool may be conveniently operated in differentdirections.

With the above and other objects in view, the invention consists in thenovel features, details of construction and combination of parts whichwill hereinafter be more fully set forth, illustrated in theaccompanying drawing and pointed out in the appended claim.

Figure 1 is a longitudinal section;

Fig. 2 is a rear elevation;

Fig. 3 is a detail illustrating the manner of engagement and holding ofthe tool within its socket; and

Fig. a is a rear elevation illustrating the disengagement of one of thepawls from the ratchet and further illustrating the tension of thespring upon the other of said ratchets for retaining the latter inratchet engaging position.

Referring more particularly to the accompanying drawing, in which likecharacters of reference refer to corresponding parts in the severalviews, 5 denotes the head or handle portion of the tool which ispreferably constructed of wood and of annular configuration and has itsinner face provided with an annular recess 6 and also with a bore 7 forreceiving a tool or the like if so desirable. A hearing plate 8 isseated within the head 5 at a point iiush with the wall or the recess 6and is engaged by the tool socket 9, said socket being formed with anenlarged flanged ratchet head 10, and the ratchet head.

Specification of Letters Patent.

Patented Apr. 16, 191%.

Serial No. 80,467.

10 of the socket 9 is defined upon the hearing plate 8 and within therecess 6 through the medium of a plate 11. This plate 11 is secured tothe under face of the head 5 through the medium of fasteners in the formof screws or the like and indicated by the character 12. This toolsocket 9 is, of course, provided with the usual bore 13 for thereception of the shank portion 1a of an auger, bit or the like tool, andit is to be further stated that this socket is externally threaded asindicated by the character 1% for threadedly receiving an internallythreaded collar 15, the purpose of said collar being to engage with theshoulder of the tool, in the manner illustrated in Fig. 30f the drawing,whereby the tool is permanently retained within the socket, and in turnto the head 5 as the occasion may so demand. A pair of pawls 16 and 17are pivotally mounted in the recess 6 of the head 5 through the mediumof the pins 18 which pass through the openings 19 of enlargement-s 20 ofsaid pawls, and pivotally connecting the pawls to opposite sides of thetool socket 9 and for a horizontal swinging movement with respect tosaid head, whereby the head portions 21 and 22 of the respective pawls16 and 17 will engage with the ratchet flange 10 of the socket. The headportions of the dogs are automatically retained in engagement with theratchet flange 10 of the socket through the medium of a flat archedspring 23. This spring 23 is loosely seated within the recess 6 of thehead and has its leaves 2% reposed in notches 25 of the enlargements 20of said dogs. The dogs are alternately operated through the medium of anoperating member 26, this member 26 embodying a fiat flexible memberdefined in the recess 6 of the head and lying in a horizontal planethereto. The opposite ends of this operating member 26 are bent inwardlyand upon themselves to provide the same with hooked ends 27. Riveted orotherwise secured to the medial portion of this member 26 is a button 28which protrudes through the slot 29 formed in the retaining plate 11,whereby when the button is actuated in a direction toward the leaf theright side hooked end 27 of the member 26 will engage the tail of thedog 22 and release the head portion thereof from engagement with theteeth of the ratchet flange 10. This operation of the releasing of thedog 17 will cause the rounded portion 32 of the dog to abut against theleaf of the spring engaging the same and draw the spring in a slighthorizontal direction whereby the leaf of the spring contacting with thepawl 16 will be drawn into taut engagement therewith and permanentlyhold the head 21 of the dog 16 in firm contact with the ratchet flange10 of the tool socket 9. Of course, it will be understood that should areverse direction of the tool be desired then by moving the button 28 tothe right will operate the dog 16 and force a tension of the spring 23against the dog 17. It is to be further stated that the hooked end 27 ofthe member 26 will frictionally engage with the tail portion of therespective dogs 16 and 1'? whereby holding the member against movement,and when assuming such position the member 26 will be forced intoengagement with the pins 29 and prevent theforcing of the hooked ends 27below the plane of the button 28 and holding the same at all times infrictional contact with the dog with which it is e11- gaged.

From the foregoing description, taken in connection with theaccompanying drawing, the advantages of construction and of the methodof operation will be readily apparent to those skilled in the art towhich the invention relates, and while I have described the principlesof operation of the invention, together with the device which I now consider to be the best embodiment thereof, I desire to have it understoodthat the device shown is merely illustrative and that such advantagesmay be made when desired as are within the scope of the claim appendedthereto.

I claim:

A tool holder embodying a recessed head, a tool socket member having atoothed flange, a solid retaining plate connecting the toothed flange ofthe socket member within the recess of the head, and provided with aslot, a pair of dogs pivotally connected in the recess of the head, aspring mounted in the recess of the head for holding the dogs in contactwith the toothed flange of said tool socket member, and a bar having itsopposite ends curved inwardly to provide the same with hooked terminalportions, said bar being arranged in the recess of the head forhorizontal sliding movement, means connected with said operating memberand protruding through the slot of the plate for causing the hooked endsof said operating member to alternately engage with the tails of thedogs and throwing one of said dogs out of contact with the teeth of theflange, and forcing the spring taut against the opposite pawl forpermanently retaining the same in engagement with the teeth.

In testimony whereof I aifix my signature in presence of two witnesses.

ROBERT NELSON. Witnesses ESTHER E. CHAsLnY, CHARLOTTE E. DAY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. 0.

